MTFCA Forum

Is anyone using a GPS speedometer on their Model T? How is it working out and do the coils cause a problem?

Yes, I use an inexpensive Garmin for route and speed info. No coil problems.
Dave

I use Ulysse speedometer app on my phone. I use it in the Model T, skiing, in the plane, etc. It works great.

Mark Nunn wrote: ↑

Sat Mar 25, 2023 5:33 pm

I use Ulysse speedometer app on my phone. I use it in the Model T, skiing, in the plane, etc. It works great.

Dittos. The wife has a phone ap. No issue with coils.

Thanks for the comments but I'm not talking about a phone app. I'm wondering about the GPS units that look like a speedometer used on boats and ATVs.

But Roger, that only goes to 60mph.

I use an app. called Speed Bot on my cell phone. Gives the same info a Garmin does. Works good.

I use a Garmin GPS any time I am driving. Previous units would not work on 6 volt, so i used 2 6 volt rechargeable hunting batteries connected in aeries. The current unit works very well plugged into my 6 volt car. Even starting the engine presents no problem to the Garmin.
Speed is observed and distance is recorded on each trip. A friend, whom I often tour with, also uses a Garmin connected to the car 6 volt circuit.

Art Mirtes

Roger Byrne wrote: ↑

Sat Mar 25, 2023 8:02 pm

Thanks for the comments but I'm not talking about a phone app. I'm wondering about the GPS units that look like a speedometer used on boats and ATVs.

I was going to look into this awhile ago - might work with a period correct speedometer. The only issues may be matching up a speedometer cable and 12v.
https://speedhut.com/categories/speedbox.html
Instructions https://speedhut.com/content/instructio ... -10-16.pdf

I have a marine GPS speedometer from Cabelas approx $90.00. It is a 12v unit, just power & ground to install. Running with dist ignition, no issues. John
Oscoda Michigan

Thanks John, that was the type of installation I am interested in! By the way Dan, they make them in a 120MPH version so it could work for guys like you too!